Encapsulation-based intelligent self-healing cementitious composite with a potential of crack self-healing and closure is promising to recovery concrete from damage and improve the durability and serviceability of infrastructures. The efficiency of self-healing concrete were investigated, but limited studies have been conducted on effect of incompatibility between the self-healing agent and cement matrix on the cracking behaviour and recovery efficiency of crack-healed concrete. In this study, a coupled experimental and numerical investigations were adopted to understand the cracking behaviours of crack-healed cementitious composites using traction–separation law by extended finite element method (XFEM). Firstly, experimental investigation was conducted to characterize the properties and parameters of cement matrix and healing agent-crack interface to calibrate the traction–separation law. Then, various parameters of healing agent, cement matrix, and their interface on the perfo...

中文翻译：

---

固化剂与水泥基体的不相容性对智能水泥基复合材料自愈性能的影响

基于封装的智能自修复胶结复合材料具有裂缝自修复和封闭的潜力，有望使混凝土免受损坏，并提高基础设施的耐久性和可维修性。研究了自修复混凝土的效率，但是关于自修复剂与水泥基体不相容对裂缝愈合混凝土的开裂行为和恢复效率的影响的研究很少。在这项研究中，通过扩展的有限元方法（XFEM），采用牵引力-分离定律，通过实验和数值研究相结合的方法来了解裂缝愈合的水泥基复合材料的开裂行为。首先，进行了实验研究，以表征水泥基体的特性和参数以及愈合剂-裂纹界面，以校准牵引分离规律。然后，治疗剂，水泥基体及其在胶粘剂上的界面的各种参数。